Bidirectional Modular Multilevel Resonant DC-DC Converter for Medium Voltage Power Conversion

A bidirectional multilevel resonant DC-DC converter is proposed in this paper. With modular multilevel configuration, the converter can interface with medium voltage. The converter has bidirectional power conversion capability with respect to different load conditions. Steady-state analysis of operation principles and submodule voltage balancing of the converter are presented. The investigations are confirmed by simulations and experiments.